Soot-blower attachment.



A. V. BAYER.

SOOT BLOWER ATTACHMENT.

APPLIOATION FILED MAR. 4,1912.

g, Patented June 4,1912.

IN VENTOR.

UNKTED STATES PATENT OFFICE.

AUGUST V. BAYER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO BAYER STEAM SOOT BLOWER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

roaaaso.

more fully set forth in the specification and -13 pointed out in the claims. 15 In the drawings, Figure 1 is an elevation of a portion of the side wall of a watertube'boiler furnace showing my invention applied thereto; Fig. 2 is an enlarged vertical transverse section on the line 22 of Fig. 1, parts being in elevation; Fig. 3'is a horizdntal section on the zi -zag line 33 of 2; Fig. t is a front e evation of the wall-plate with my attachmentin position, th'e nozzle being in cross-section; and Fig. 5 is a cross-section ofthe nozzle attachment only, on the line 55 of Fig. 4.

The present improvement finds special ap-' plication in that type of Water-tube boiler 'in which the'tubes are cleaned by a nozzle 3i inserted throu h the-side wall of the boilerfurnace, and vfrom which the cleaning fluid (usually steam) is projected across the tubes. Types of such boiler are the Babcock and Wilcox and the Edge Moor. The

blowing nozzle is generally one which oecillates in the eneral. direction of the tubes. being inserte through an opening formed in a Wall-plate specially built in the furnace wall for the accommodation of the several 40 nozzles.

It is the object of my invention to provide suitable means operating in conjunction with the nozzle for permanently keeping a/covered the opening or slot in said Wallplate (through which the nozzle has a definite range of oscillation or sweep) so as to prevent the induction through said slot of outside air currents into the furnace. These currents notonly chill the boiler tubes but they ,in ameas'ure condense the steam projected fro rn the nozzle and'thereby inter- -fere withthe successful blowing or'cleaning fatheboiler. Under my invention the slots or, openings in the wall-plate. rema n I per;

Specification of Letters Patent.

Application filed March 4, 1912. Serial No. 681,3i'9.

Patented June at, 1912.

Inanently covered .or shielded, so that the blowing of the boiler is perfect.

The advantages of the invention will be best apparent from a detailed description thereof which is as follows Referring to the drawings, F represents the side furnace-wall of a well-known type of water-tube boiler (the Babcock and Nil cox) and T the inclined tubes entering into the construction of the water-tube section of the same. As well understood in the art the side wall is provided with a recess or opening O op osite the tubes, said opening being closed y awalllate P provided with laterally elongated usually elliptical) openings or slots 8 through Wliichnre passed steam nozzles 1 terminating in spray-heads 2 opposite the tubes T, for the projection of a cleaning fiuid (steam) by which the boiler is blown from time to time and the tubes cleansed of any accumulations of soot, ashes, dirt and other foreign material. The nozzles in practice have a definite range of oscillation across the openings s'in planes substantially parallel to the boilertubes, so as to take in as large a section of the 0 tubes as possible during the blowing operation. Any means for imparting oscillation to the nozzles may be adopted, the mecha nism shown not being herein'claimed, constituting as it" does the subject-matter of a 35 I distinct application. It may however, be

briefly referred to in order to explain at least one mode of actuating the nozzles.

Mounted centrally in front of the wallplate P is a fixed riser 3 which is supplied with steam from the steam feed-pipe 4, a suitable controlling valve Vbeing positioned where most convenient for regulating the supply. The pipe 4 preferably draws. its steam supply from the shell or drum of the boiler, not here shown. Mounted to one side of the riser is a rocker-bar 5 provided with an operating handle 6, the bar having distributed thereon. a series of lever arms 7 iwhich are coupled through the links 8 to the lever-arms 9 of the rotatable members of the hollow steam-joints 10 from which lead the. nozzles 1.' The joints 1U aremounted at the innerends of the short tubes or shunts 11 carried bythe riser 3, through whichtubes the steam flows i'nto the joints lOand thence into the nozzles land spray-heads 2.

The axes of rotation of the joints are at right angles to the tubes T, so that when the rocker-bar 5 is rocked back and forth, the nozzles have imparted to theme. swinging movement or oscillation substantially parallel to the boiler tubes. This feature however, is not herein claimed.

The dimensions of the slots .9 formed in the wall-plate P and through which the nozzles 1 project are sufiicient to allow for the necessary oscillation or traverse iniparted to the nozzles; but it is apparent that unless the slot is kept permanently closed, atmospheric air will be drawn into the furnace through the slot, therebychilling the tubes; and when the nozzle is blown, large quantities of air would be drafted through the slot into the furnace not only chilling the tubes but condensing a portion of the steam projected from the nozzle. The con- 20 densed steam instead of thoroughly cleaning the tubes would moisten the soot and ashes accumulated thereon causing a considerable portion of the material to cling to the tubes and the boiler would be only partially or imperfectly blown or cleaned. Where the boiler was blown by hand, the holes 3 upon the conclusion of the operation were covered over by plates 12 (preferably flanged at the sides) .the plate bearing against the inclined edge of the beveled flange or hollow boss 13 surrounding the hole, and resting with its lower edge at the bottoms of the guide-ways or recesses 14 formed at the sides of the wall-plate P, the sides of the plate 12 being rovided with pins or trunnions 15 operating in the guide-ways. When it was desired to insert'a nozzle through the hole 8 to blow the boiler} the plate 12 was simply lifted by the front finger-hold or, lug l6 and raised until its lower edge rested on top of the flange 13. During the'blowin of course the hole .9 was uncovered so that air was drafted into the furnace-an objection overcome by my present invention. After the trunnions 15 were inserted in the recesses 14, plates 12 were prevented from dropping out by to the plates 12 over the recesses. These plates 12 though no longer serving their original function of covering up the slots 'or holes ,3 are availed of as suitable adjuncts to my attachment. This attachment consists of a shield ,or plate 18 of a shape to cover up the slot .9 and partly overlap the inclined edge of the flange 13 against which it is designed to bear, the shield being simply passed or slipped over the nozzle 1. Riveted to the shield ad acent the opening thereof,

bracket or ledge 19 against which the lower edge of the plate or gravitating member 12 is allowed to rest. The resting of the plate 12 upon the ledge 19 not only serves to maintain the shield 18 in proper position on the nozzle 1, preventing outward disthe strips 17' subsequently riveted and positioned above the nozzle is an angle-I placement thereof, but holds it against turning or rotary displacement. It also causes the shield to hug the edge of the flange 13 so that the slot 8 remains permanently lation or traverse of the nozzle in the slot 3 is not excessive owing to the proximity of its axis of oscillation to the wall-plate P, sothat the movement of theshield 18 carried by the nozzle is neverso great as to .cause an uncovering of the slot, the shield at all times overlapping the inner edge 0 the hollow boss or flange 13. It will thus be seen that by simply passing my shield 18 over the nozzle 1 and allowing the weighted plate 12 to rest on the ledge 19 thereof, the slot 8 is kept permanently closed, and when the boiler is blown, no steam is condensed as there is no influx of cold air into the furnace, and the cleaning is perfect. Since the plate 12 is not susceptible of lateral movement, the contact between it and the ledge 19 is a rubbing one owing to the lat- These' oscillations being along inclined tubes T), the plate 12 is free to rise and .fall to conform to said oscillations as the trunnions 15 thereof are loose in their pockets or recesses 1 L. 7

Having described my invention, what I claim is i- 1. In combination with a boiler-furnace wall provided with an opening, a nozzle oscillating across the opening, and projecting a cleaning fluid against the boiler,a shield passed Over the nozzle, and a member overlapping the shield for maintaining the same in close proximity to the wall opposite said opening whereby the latter is kept permanently covered with the oscilla tions of the nozzle. Q 2. In combination with a boiler-furnace wall provided with an opening, a nozzle oscillating across the opening and projectin a cleaning fluid against the boiler, a shield mounted moving therewith in front of and across the the shield and maintaining the same in close proximity whereby covered. v

3. "In combination with a roller-furnace wall-plate provided po site the boiler, said the latter remains permanently opening being boundthe opening, a lodge on the outer face of the covered. Of course, the lateral oscileral movements to which the shield is sub jected with the oscillations of the nozzle.

opening, and a weighted member resting on to the wall opposite the opening,

planes (substantially parallel to the boiler loosely on the nozzle and with an opening oped by a flange having its outer edge disposed v illating nozzle operating for projecting a clea'nshield above the nozzle, and a gravitating ed by a, fiangeterminating in an upwardly inclined edge directed toward the plate, a

nozzle passed through the opening and having a definite range of movement across the same for projecting a'pleaning fluid against the boiler, a shield passed over the nozzle and. engaging the end of the flange and overlapping the opening, a ledge carried by the outer face of the shield above the opening formed therein for the reception of the nozzle, a weighted plate resting on the ledge, and means for movably anchoring said plate to the furnace wall, for the purpose set forth.

' 5. As an article of manufacture, a s0otblower nozzle attachment comprising a plate having an opening for the insertion of the nozzle, and a ledge secured to one face of the plate adjacent to the opening, as set forth.

6. In combination with a boiler-furnace wall provided with an opening, a blower nozzle oscillating across the opening, a shield mounted on the nozzle and moving therewith, and a weighted member resting on the shield and having rubbing contact therewith for maintaining the shield in proper relation to the opening traversed by the nozzle, the shield overlapping the open ing and preventing ingress of atmospheric air into the furnace. I

7. In combination with a boiler-furnace wall provided with an opening, a blower Inembertraversing said opening, and a sliding shield disposed about said member and covering the opening.

In testimony whereof I afiix my signature, in presence of two witnesses.

. AUGUST V. BAYER. Witnesses; v

EMIL STAREK, Jos. A. MICHEL. 

